[INFO] cloning repository https://github.com/Liamolucko/gpu-mandelbrot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Liamolucko/gpu-mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamolucko%2Fgpu-mandelbrot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamolucko%2Fgpu-mandelbrot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ce365aa4e34453e64418d9e9521d32768e100335
[INFO] documenting Liamolucko/gpu-mandelbrot against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamolucko%2Fgpu-mandelbrot" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Liamolucko/gpu-mandelbrot on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/Liamolucko/gpu-mandelbrot
[INFO] finished tweaking git repo https://github.com/Liamolucko/gpu-mandelbrot
[INFO] tweaked toml for git repo https://github.com/Liamolucko/gpu-mandelbrot written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Liamolucko/gpu-mandelbrot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be82a902689486bc0d166f669a10f4f4ebae7ce30832ab50cc9066d41fff6e67
[INFO] running `Command { std: "docker" "start" "-a" "be82a902689486bc0d166f669a10f4f4ebae7ce30832ab50cc9066d41fff6e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be82a902689486bc0d166f669a10f4f4ebae7ce30832ab50cc9066d41fff6e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be82a902689486bc0d166f669a10f4f4ebae7ce30832ab50cc9066d41fff6e67", kill_on_drop: false }`
[INFO] [stdout] be82a902689486bc0d166f669a10f4f4ebae7ce30832ab50cc9066d41fff6e67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01fdbd3c633456c9fd7c9b5d1fa383a65338f0c07ff717f994834a6b186c270c
[INFO] running `Command { std: "docker" "start" "-a" "01fdbd3c633456c9fd7c9b5d1fa383a65338f0c07ff717f994834a6b186c270c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling pkg-config v0.3.20
[INFO] [stderr]    Compiling syn v1.0.78
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking ahash v0.4.7
[INFO] [stderr]     Checking minimal-lexical v0.1.3
[INFO] [stderr]     Checking fixedbitset v0.4.0
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]     Checking ttf-parser v0.6.2
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.4
[INFO] [stderr]     Checking xml-rs v0.8.4
[INFO] [stderr]     Checking glow v0.11.0
[INFO] [stderr]     Checking arrayvec v0.7.1
[INFO] [stderr]     Checking profiling v1.0.3
[INFO] [stderr]    Compiling winit v0.25.0
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling nom v7.0.0
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking wgpu-types v0.10.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]    Compiling wgpu-core v0.10.4
[INFO] [stderr]     Checking libloading v0.7.0
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking instant v0.1.11
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]     Checking ash v0.33.3+1.2.191
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]    Compiling wayland-sys v0.28.6
[INFO] [stderr]    Compiling x11-dl v2.19.1
[INFO] [stderr]     Checking indexmap v1.7.0
[INFO] [stderr]     Checking gpu-descriptor v0.2.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking petgraph v0.6.0
[INFO] [stderr]     Checking owned_ttf_parser v0.6.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking rusttype v0.9.2
[INFO] [stderr]    Compiling wayland-scanner v0.28.6
[INFO] [stderr]     Checking andrew v0.3.1
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking khronos-egl v4.1.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking memmap2 v0.1.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking mio-misc v1.2.1
[INFO] [stderr]     Checking xcursor v0.3.4
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling wayland-client v0.28.6
[INFO] [stderr]    Compiling wayland-protocols v0.28.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling bytemuck_derive v1.0.1
[INFO] [stderr]     Checking bytemuck v1.7.2
[INFO] [stderr]     Checking calloop v0.6.5
[INFO] [stderr]     Checking wayland-commons v0.28.6
[INFO] [stderr]     Checking thiserror v1.0.29
[INFO] [stderr]     Checking naga v0.6.3
[INFO] [stderr]     Checking wayland-cursor v0.28.6
[INFO] [stderr]     Checking wgpu-hal v0.10.7
[INFO] [stderr]     Checking wgpu v0.10.2
[INFO] [stderr]     Checking smithay-client-toolkit v0.12.3
[INFO] [stderr]  Documenting gpu-mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(bigint_helper_methods)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `gpu-mandelbrot`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name gpu_mandelbrot src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=43af8cba2546b175 -L dependency=/opt/rustwide/target/debug/deps --extern bytemuck=/opt/rustwide/target/debug/deps/libbytemuck-782a3df83d2e99b9.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-e9fb09df5b0832cb.rmeta --extern pollster=/opt/rustwide/target/debug/deps/libpollster-fdaf7976e2cf8be0.rmeta --extern wgpu=/opt/rustwide/target/debug/deps/libwgpu-3f6ae45acc0d2a75.rmeta --extern winit=/opt/rustwide/target/debug/deps/libwinit-71849364bc6f1a67.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "01fdbd3c633456c9fd7c9b5d1fa383a65338f0c07ff717f994834a6b186c270c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01fdbd3c633456c9fd7c9b5d1fa383a65338f0c07ff717f994834a6b186c270c", kill_on_drop: false }`
[INFO] [stdout] 01fdbd3c633456c9fd7c9b5d1fa383a65338f0c07ff717f994834a6b186c270c